SANDRA Bullock didn't take too kindly to being interrupted during her acceptance speech at today's Critics' Choice Awards.

The Gravity star was caught off-guard while accepting the award for Best Actress in an Action Movie at the awards in LA.

After delivering a tongue-in-cheek thank you to "Jackie Chan, Jean Claude Van Damme and Sylvester Stallone for teaching me everything I know," Bullock was momentarily silenced by a prerecorded announcement that echoed through the theatre.

News_Rich_Media: Sandra Bullock drops the F-bomb when her acceptance speech at the Critics Choice Awards is interrupted. Courtesy: The CW

"WHAT THE F***?" was her rather animated response - to much applause from the crowd.

"I'm an action hero. You don't do that to an action hero", the 49-year-old actor joked.

Bullock is among the early winners at the critic-voted awards, with other gongs so far going to American Hustle for Best Comedy, Frozen for Best Animated Feature, Leonardo DiCaprio in The Wolf of Wall Street for Best Actor in a Comedy and Amy Adams in American Hustle for Best Actress in a Comedy.

Later in the evening, actor Bradley Cooper joined in the foul-mouthed fun on stage when accepting the award for Best Comedy on behalf of the cast and crew of American Hustle, jokingly referring to his fellow cast members as "these f***ing actors."

Actor Leonardo DiCaprio accepts the award for Best Actor in a Comedy for "The Wolf of Wall Street" from actress Christina Applegate onstage during the 19th Annual Critics' Choice Movie Awards in California. Picture: Getty26 of 44

Actor Leonardo DiCaprio accepts the award for Best Actor in a Comedy for "The Wolf of Wall Street" onstage during the 19th Annual Critics' Choice Movie Awards in California. Picture: Getty27 of 44

Actor Leonardo DiCaprio accepts the award for Best Actor in a Comedy for "The Wolf of Wall Street" from actress Christina Applegate onstage during the 19th Annual Critics' Choice Movie Awards in California. Picture: Getty

Actor Leonardo DiCaprio accepts the award for Best Actor in a Comedy for "The Wolf of Wall Street" onstage during the 19th Annual Critics' Choice Movie Awards in California. Picture: Getty